build: pass --no-undefined to linker

Do not allow undefined symbols.

diff --git a/configure.ac b/configure.ac
index e7bab61..5948cf3 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -241,6 +241,7 @@ AC_SUBST([OUR_CFLAGS], "$with_cflags $with_coverage_cflags")
 
 CC_CHECK_FLAGS_APPEND([with_ldflags], [LDFLAGS], [ \
                       -Wl,--as-needed \
+                      -Wl,--no-undefined \
                       -Wl,--gc-sections])
 AC_SUBST([OUR_LDFLAGS], $with_ldflags)